FPGA在卫星AOCS测试中的应用

在卫星姿态和轨道控制系统(AOCS)测试过程中，常常需要专用测试设备提供正确的输入输出，实现模拟测试所需要的条件。传统的测试设备是用通用的IC芯片构成的，研制周期长，修改困难，通用性低。FPGA技术采用硬件设计软件化的思路，使得数字系统设计更为简洁，并且能实现很大规模的信号处理。基于卫星电信号的测试原理，以FPGA为核心，设计了一个适用于APCI总线的通用数字信号测试模块，实现对卫星姿态控制测试中数字信号的采集和模拟。结果表明，该接口方案功能正确，结构简单，能适应实时系统的需求。

Application of FPGA Technology in a Satellite AOCS Test

Special test equipments are used to provide accurate electrical signals in satellite attitude and orbit control system (AOCS) test to simulate the external conditions.In conventional method,these test equipments are constituted by general IC chip,with the disadvantages of long development cycle,difficulty in modifying and low versatility.FPGA technology makes the digital system more simply and easy to handle mass of signals by designing the hardware with software method.The test principle of digital signals in satellite AOCS test is introduced.A general purpose module based on FPGA is designed for digital signals acquisition and simulation,which refers to the APCI bus system.The results show that the digital interface based on FPGA has the advantages of accurate functions,and simple structure,and can adapt to the needs of real-time system.